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68151403 = 1073831663
BaseRepresentation
bin1000000111111…
…10100001101011
311202020110011001
410003332201223
5114421321103
610432415431
71455164065
oct403764153
9152213131
1068151403
1135519181
121a9a7577
1311172298
1490a0735
155eb301d
hex40fe86b

68151403 has 8 divisors (see below), whose sum is σ = 69009408. Its totient is φ = 67297704.

The previous prime is 68151379. The next prime is 68151437. The reversal of 68151403 is 30415186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68151403 - 25 = 68151371 is a prime.

It is a super-2 number, since 2×681514032 = 9289227461736818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68151493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40150 + ... + 41812.

It is an arithmetic number, because the mean of its divisors is an integer number (8626176).

Almost surely, 268151403 is an apocalyptic number.

68151403 is a deficient number, since it is larger than the sum of its proper divisors (858005).

68151403 is a wasteful number, since it uses less digits than its factorization.

68151403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 68151403 is about 8255.3863022877. The cubic root of 68151403 is about 408.4682144812.

Adding to 68151403 its reverse (30415186), we get a palindrome (98566589).

The spelling of 68151403 in words is "sixty-eight million, one hundred fifty-one thousand, four hundred three".

Divisors: 1 107 383 1663 40981 177941 636929 68151403